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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno">    1</span>&#160;<span class="comment">/*</span></div><div class="line"><a name="l00002"></a><span class="lineno">    2</span>&#160;<span class="comment"> * ISO14443-2A.h</span></div><div class="line"><a name="l00003"></a><span class="lineno">    3</span>&#160;<span class="comment"> *</span></div><div class="line"><a name="l00004"></a><span class="lineno">    4</span>&#160;<span class="comment"> *  Created on: 19.03.2013</span></div><div class="line"><a name="l00005"></a><span class="lineno">    5</span>&#160;<span class="comment"> *      Author: skuser</span></div><div class="line"><a name="l00006"></a><span class="lineno">    6</span>&#160;<span class="comment"> */</span></div><div class="line"><a name="l00007"></a><span class="lineno">    7</span>&#160;</div><div class="line"><a name="l00008"></a><span class="lineno">    8</span>&#160;<span class="preprocessor">#ifndef ISO14443_3A_H_</span></div><div class="line"><a name="l00009"></a><span class="lineno">    9</span>&#160;<span class="preprocessor">#define ISO14443_3A_H_</span></div><div class="line"><a name="l00010"></a><span class="lineno">   10</span>&#160;</div><div class="line"><a name="l00011"></a><span class="lineno">   11</span>&#160;<span class="preprocessor">#include &quot;../Common.h&quot;</span></div><div class="line"><a name="l00012"></a><span class="lineno">   12</span>&#160;<span class="preprocessor">#include &lt;string.h&gt;</span></div><div class="line"><a name="l00013"></a><span class="lineno">   13</span>&#160;</div><div class="line"><a name="l00014"></a><span class="lineno">   14</span>&#160;<span class="preprocessor">#define ISO14443A_UID_SIZE_SINGLE   4    </span><span class="comment">/* bytes */</span><span class="preprocessor"></span></div><div class="line"><a name="l00015"></a><span class="lineno">   15</span>&#160;<span class="preprocessor">#define ISO14443A_UID_SIZE_DOUBLE   7</span></div><div class="line"><a name="l00016"></a><span class="lineno">   16</span>&#160;<span class="preprocessor">#define ISO14443A_UID_SIZE_TRIPLE   10</span></div><div class="line"><a name="l00017"></a><span class="lineno">   17</span>&#160;</div><div class="line"><a name="l00018"></a><span class="lineno">   18</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_REQA          0x26</span></div><div class="line"><a name="l00019"></a><span class="lineno">   19</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_WUPA          0x52</span></div><div class="line"><a name="l00020"></a><span class="lineno">   20</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_SELECT_CL1    0x93</span></div><div class="line"><a name="l00021"></a><span class="lineno">   21</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_SELECT_CL2    0x95</span></div><div class="line"><a name="l00022"></a><span class="lineno">   22</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_SELECT_CL3    0x97</span></div><div class="line"><a name="l00023"></a><span class="lineno">   23</span>&#160;<span class="preprocessor">#define ISO14443A_CMD_HLTA          0x50</span></div><div class="line"><a name="l00024"></a><span class="lineno">   24</span>&#160;</div><div class="line"><a name="l00025"></a><span class="lineno">   25</span>&#160;<span class="preprocessor">#define ISO14443A_NVB_AC_START      0x20</span></div><div class="line"><a name="l00026"></a><span class="lineno">   26</span>&#160;<span class="preprocessor">#define ISO14443A_NVB_AC_END        0x70</span></div><div class="line"><a name="l00027"></a><span class="lineno">   27</span>&#160;</div><div class="line"><a name="l00028"></a><span class="lineno">   28</span>&#160;<span class="preprocessor">#define ISO14443A_CL_UID_OFFSET     0</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;<span class="preprocessor">#define ISO14443A_CL_UID_SIZE       4</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;<span class="preprocessor">#define ISO14443A_CL_BCC_OFFSET     4</span></div><div class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;<span class="preprocessor">#define ISO14443A_CL_BCC_SIZE       1 </span><span class="comment">/* Byte */</span><span class="preprocessor"></span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;<span class="preprocessor">#define ISO14443A_CL_FRAME_SIZE     ((ISO14443A_CL_UID_SIZE + ISO14443A_CL_BCC_SIZE) * 8)    </span><span class="comment">/* UID[N...N+3] || BCCN */</span><span class="preprocessor"></span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;<span class="preprocessor">#define ISO14443A_SAK_INCOMPLETE    0x04</span></div><div class="line"><a name="l00034"></a><span class="lineno">   34</span>&#160;<span class="preprocessor">#define ISO14443A_SAK_COMPLETE_COMPLIANT        0x20</span></div><div class="line"><a name="l00035"></a><span class="lineno">   35</span>&#160;<span class="preprocessor">#define ISO14443A_SAK_COMPLETE_NOT_COMPLIANT    0x00</span></div><div class="line"><a name="l00036"></a><span class="lineno">   36</span>&#160;</div><div class="line"><a name="l00037"></a><span class="lineno">   37</span>&#160;<span class="preprocessor">#define ISO14443A_ATQA_FRAME_SIZE   (2 * 8) </span><span class="comment">/* Bit */</span><span class="preprocessor"></span></div><div class="line"><a name="l00038"></a><span class="lineno">   38</span>&#160;<span class="preprocessor">#define ISO14443A_SAK_FRAME_SIZE    (3 * 8) </span><span class="comment">/* Bit */</span><span class="preprocessor"></span></div><div class="line"><a name="l00039"></a><span class="lineno">   39</span>&#160;</div><div class="line"><a name="l00040"></a><span class="lineno">   40</span>&#160;<span class="preprocessor">#define ISO14443A_UID0_RANDOM       0x08</span></div><div class="line"><a name="l00041"></a><span class="lineno">   41</span>&#160;<span class="preprocessor">#define ISO14443A_UID0_CT           0x88</span></div><div class="line"><a name="l00042"></a><span class="lineno">   42</span>&#160;</div><div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="preprocessor">#define ISO14443A_CRCA_SIZE         2</span></div><div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;</div><div class="line"><a name="l00045"></a><span class="lineno">   45</span>&#160;<span class="preprocessor">#define ISO14443A_CALC_BCC(ByteBuffer) \</span></div><div class="line"><a name="l00046"></a><span class="lineno">   46</span>&#160;<span class="preprocessor">    ( ByteBuffer[0] ^ ByteBuffer[1] ^ ByteBuffer[2] ^ ByteBuffer[3] )</span></div><div class="line"><a name="l00047"></a><span class="lineno">   47</span>&#160;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;<span class="keywordtype">void</span> ISO14443AAppendCRCA(<span class="keywordtype">void</span>* Buffer, uint16_t ByteCount);</div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;<span class="keywordtype">bool</span> ISO14443ACheckCRCA(<span class="keyword">const</span> <span class="keywordtype">void</span>* Buffer, uint16_t ByteCount);</div><div class="line"><a name="l00050"></a><span class="lineno">   50</span>&#160;</div><div class="line"><a name="l00051"></a><span class="lineno">   51</span>&#160;INLINE <span class="keywordtype">bool</span> ISO14443ASelect(<span class="keywordtype">void</span>* Buffer, uint16_t* BitCount, uint8_t* UidCL, uint8_t SAKValue);</div><div class="line"><a name="l00052"></a><span class="lineno">   52</span>&#160;INLINE <span class="keywordtype">bool</span> ISO14443AWakeUp(<span class="keywordtype">void</span>* Buffer, uint16_t* BitCount, uint16_t ATQAValue, <span class="keywordtype">bool</span> FromHalt);</div><div class="line"><a name="l00053"></a><span class="lineno">   53</span>&#160;</div><div class="line"><a name="l00054"></a><span class="lineno">   54</span>&#160;INLINE</div><div class="line"><a name="l00055"></a><span class="lineno">   55</span>&#160;<span class="keywordtype">bool</span> ISO14443ASelect(<span class="keywordtype">void</span>* Buffer, uint16_t* BitCount, uint8_t* UidCL, uint8_t SAKValue)</div><div class="line"><a name="l00056"></a><span class="lineno">   56</span>&#160;{</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;    uint8_t* DataPtr = (uint8_t*) Buffer;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;    uint8_t NVB = DataPtr[1];</div><div class="line"><a name="l00059"></a><span class="lineno">   59</span>&#160;    <span class="comment">//uint8_t CollisionByteCount = (NVB &gt;&gt; 4) &amp; 0x0F;</span></div><div class="line"><a name="l00060"></a><span class="lineno">   60</span>&#160;    <span class="comment">//uint8_t CollisionBitCount =  (NVB &gt;&gt; 0) &amp; 0x0F;</span></div><div class="line"><a name="l00061"></a><span class="lineno">   61</span>&#160;</div><div class="line"><a name="l00062"></a><span class="lineno">   62</span>&#160;    <span class="keywordflow">switch</span> (NVB) {</div><div class="line"><a name="l00063"></a><span class="lineno">   63</span>&#160;    <span class="keywordflow">case</span> ISO14443A_NVB_AC_START:</div><div class="line"><a name="l00064"></a><span class="lineno">   64</span>&#160;        <span class="comment">/* Start of anticollision procedure.</span></div><div class="line"><a name="l00065"></a><span class="lineno">   65</span>&#160;<span class="comment">        * Send whole UID CLn + BCC */</span></div><div class="line"><a name="l00066"></a><span class="lineno">   66</span>&#160;        DataPtr[0] = UidCL[0];</div><div class="line"><a name="l00067"></a><span class="lineno">   67</span>&#160;        DataPtr[1] = UidCL[1];</div><div class="line"><a name="l00068"></a><span class="lineno">   68</span>&#160;        DataPtr[2] = UidCL[2];</div><div class="line"><a name="l00069"></a><span class="lineno">   69</span>&#160;        DataPtr[3] = UidCL[3];</div><div class="line"><a name="l00070"></a><span class="lineno">   70</span>&#160;        DataPtr[4] = ISO14443A_CALC_BCC(DataPtr);</div><div class="line"><a name="l00071"></a><span class="lineno">   71</span>&#160;</div><div class="line"><a name="l00072"></a><span class="lineno">   72</span>&#160;        *BitCount = ISO14443A_CL_FRAME_SIZE;</div><div class="line"><a name="l00073"></a><span class="lineno">   73</span>&#160;</div><div class="line"><a name="l00074"></a><span class="lineno">   74</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00075"></a><span class="lineno">   75</span>&#160;</div><div class="line"><a name="l00076"></a><span class="lineno">   76</span>&#160;    <span class="keywordflow">case</span> ISO14443A_NVB_AC_END:</div><div class="line"><a name="l00077"></a><span class="lineno">   77</span>&#160;        <span class="comment">/* End of anticollision procedure.</span></div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;<span class="comment">        * Send SAK CLn if we are selected. */</span></div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class="keywordflow">if</span> (    (DataPtr[2] == UidCL[0]) &amp;&amp;</div><div class="line"><a name="l00080"></a><span class="lineno">   80</span>&#160;                (DataPtr[3] == UidCL[1]) &amp;&amp;</div><div class="line"><a name="l00081"></a><span class="lineno">   81</span>&#160;                (DataPtr[4] == UidCL[2]) &amp;&amp;</div><div class="line"><a name="l00082"></a><span class="lineno">   82</span>&#160;                (DataPtr[5] == UidCL[3]) ) {</div><div class="line"><a name="l00083"></a><span class="lineno">   83</span>&#160;</div><div class="line"><a name="l00084"></a><span class="lineno">   84</span>&#160;            DataPtr[0] = SAKValue;</div><div class="line"><a name="l00085"></a><span class="lineno">   85</span>&#160;            ISO14443AAppendCRCA(Buffer, 1);</div><div class="line"><a name="l00086"></a><span class="lineno">   86</span>&#160;</div><div class="line"><a name="l00087"></a><span class="lineno">   87</span>&#160;            *BitCount = ISO14443A_SAK_FRAME_SIZE;</div><div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00089"></a><span class="lineno">   89</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00090"></a><span class="lineno">   90</span>&#160;            <span class="comment">/* We have not been selected. Don&#39;t send anything. */</span></div><div class="line"><a name="l00091"></a><span class="lineno">   91</span>&#160;            *BitCount = 0;</div><div class="line"><a name="l00092"></a><span class="lineno">   92</span>&#160;            <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00093"></a><span class="lineno">   93</span>&#160;        }</div><div class="line"><a name="l00094"></a><span class="lineno">   94</span>&#160;    <span class="keywordflow">default</span>:</div><div class="line"><a name="l00095"></a><span class="lineno">   95</span>&#160;    {</div><div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;        uint8_t CollisionByteCount = ((NVB &gt;&gt; 4) &amp; 0x0f) - 2;</div><div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;        uint8_t CollisionBitCount  = (NVB &gt;&gt; 0) &amp; 0x0f;</div><div class="line"><a name="l00098"></a><span class="lineno">   98</span>&#160;        uint8_t mask = 0xFF &gt;&gt; (8 - CollisionBitCount);</div><div class="line"><a name="l00099"></a><span class="lineno">   99</span>&#160;        <span class="comment">// Since the UidCL does not contain the BCC, we have to distinguish here</span></div><div class="line"><a name="l00100"></a><span class="lineno">  100</span>&#160;        <span class="keywordflow">if</span> (</div><div class="line"><a name="l00101"></a><span class="lineno">  101</span>&#160;                ((CollisionByteCount == 5 || (CollisionByteCount == 4 &amp;&amp; CollisionBitCount &gt; 0)) &amp;&amp; memcmp(UidCL, &amp;DataPtr[2], 4) == 0 &amp;&amp; (ISO14443A_CALC_BCC(UidCL) &amp; mask) == (DataPtr[6] &amp; mask))</div><div class="line"><a name="l00102"></a><span class="lineno">  102</span>&#160;                ||</div><div class="line"><a name="l00103"></a><span class="lineno">  103</span>&#160;                (CollisionByteCount == 4 &amp;&amp; CollisionBitCount == 0 &amp;&amp; memcmp(UidCL, &amp;DataPtr[2], 4) == 0)</div><div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                ||</div><div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                (CollisionByteCount &lt; 4 &amp;&amp; memcmp(UidCL, &amp;DataPtr[2], CollisionByteCount) == 0 &amp;&amp; (UidCL[CollisionByteCount] &amp; mask) == (DataPtr[CollisionByteCount + 2] &amp; mask))</div><div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;        )</div><div class="line"><a name="l00107"></a><span class="lineno">  107</span>&#160;        {</div><div class="line"><a name="l00108"></a><span class="lineno">  108</span>&#160;            DataPtr[0] = UidCL[0];</div><div class="line"><a name="l00109"></a><span class="lineno">  109</span>&#160;            DataPtr[1] = UidCL[1];</div><div class="line"><a name="l00110"></a><span class="lineno">  110</span>&#160;            DataPtr[2] = UidCL[2];</div><div class="line"><a name="l00111"></a><span class="lineno">  111</span>&#160;            DataPtr[3] = UidCL[3];</div><div class="line"><a name="l00112"></a><span class="lineno">  112</span>&#160;            DataPtr[4] = ISO14443A_CALC_BCC(DataPtr);</div><div class="line"><a name="l00113"></a><span class="lineno">  113</span>&#160;</div><div class="line"><a name="l00114"></a><span class="lineno">  114</span>&#160;            *BitCount = ISO14443A_CL_FRAME_SIZE;</div><div class="line"><a name="l00115"></a><span class="lineno">  115</span>&#160;        } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00116"></a><span class="lineno">  116</span>&#160;            *BitCount = 0;</div><div class="line"><a name="l00117"></a><span class="lineno">  117</span>&#160;        }</div><div class="line"><a name="l00118"></a><span class="lineno">  118</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00119"></a><span class="lineno">  119</span>&#160;    }</div><div class="line"><a name="l00120"></a><span class="lineno">  120</span>&#160;        <span class="comment">/* TODO: No anticollision supported */</span></div><div class="line"><a name="l00121"></a><span class="lineno">  121</span>&#160;        *BitCount = 0;</div><div class="line"><a name="l00122"></a><span class="lineno">  122</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00123"></a><span class="lineno">  123</span>&#160;    }</div><div class="line"><a name="l00124"></a><span class="lineno">  124</span>&#160;}</div><div class="line"><a name="l00125"></a><span class="lineno">  125</span>&#160;</div><div class="line"><a name="l00126"></a><span class="lineno">  126</span>&#160;INLINE</div><div class="line"><a name="l00127"></a><span class="lineno">  127</span>&#160;<span class="keywordtype">bool</span> ISO14443AWakeUp(<span class="keywordtype">void</span>* Buffer, uint16_t* BitCount, uint16_t ATQAValue, <span class="keywordtype">bool</span> FromHalt)</div><div class="line"><a name="l00128"></a><span class="lineno">  128</span>&#160;{</div><div class="line"><a name="l00129"></a><span class="lineno">  129</span>&#160;    uint8_t* DataPtr = (uint8_t*) Buffer;</div><div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;</div><div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;    <span class="keywordflow">if</span> ( ((! FromHalt) &amp;&amp; (DataPtr[0] == ISO14443A_CMD_REQA)) ||</div><div class="line"><a name="l00132"></a><span class="lineno">  132</span>&#160;         (DataPtr[0] == ISO14443A_CMD_WUPA) ){</div><div class="line"><a name="l00133"></a><span class="lineno">  133</span>&#160;        DataPtr[0] = (ATQAValue &gt;&gt; 0) &amp; 0x00FF;</div><div class="line"><a name="l00134"></a><span class="lineno">  134</span>&#160;        DataPtr[1] = (ATQAValue &gt;&gt; 8) &amp; 0x00FF;</div><div class="line"><a name="l00135"></a><span class="lineno">  135</span>&#160;</div><div class="line"><a name="l00136"></a><span class="lineno">  136</span>&#160;        *BitCount = ISO14443A_ATQA_FRAME_SIZE;</div><div class="line"><a name="l00137"></a><span class="lineno">  137</span>&#160;</div><div class="line"><a name="l00138"></a><span class="lineno">  138</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00139"></a><span class="lineno">  139</span>&#160;    } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00140"></a><span class="lineno">  140</span>&#160;        *BitCount = 0;</div><div class="line"><a name="l00141"></a><span class="lineno">  141</span>&#160;</div><div class="line"><a name="l00142"></a><span class="lineno">  142</span>&#160;        <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00143"></a><span class="lineno">  143</span>&#160;    }</div><div class="line"><a name="l00144"></a><span class="lineno">  144</span>&#160;}</div><div class="line"><a name="l00145"></a><span class="lineno">  145</span>&#160;</div><div class="line"><a name="l00146"></a><span class="lineno">  146</span>&#160;<span class="preprocessor">#endif</span></div></div><!-- fragment --></div><!-- contents -->
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